[Rhysenn]

Thanks for the tips guys.

I'm willing to try again and find out exactly what gets him off.
When I was giving him the BJ I used my hands as well and I incorperated his balls as some of you suggested, but I'm thinking that I'll need to have a little more communication with him. I think if I can get him to tell me how he likes it it will have a hapier ending. And he did mention that he was really nervous so I'm going to try and get him to relax a bit more.

[oxy-moron]

I think BasketCase is probably correct- Over vigorous masturbation technique is the most likely culprit.
Get him to stop completely- could take months to work though.